Terrapoint collected LiDAR for over 177 square kilometers of the Bombay Hook National
Wildlife Refuge in Kent County, Delaware. The nominal pulse spacing for this project
was no greater than 0.75 meters. This project was collected with a sensor which collects
waveform data and provides an intensity value for each discrete pulse extracted from
the waveform. GPS Week Time, Intensity, Flightline and echo number attributes were
provided for each LiDAR point. Dewberry used proprietary procedures to classify the
LAS according to project specifications: 1-Unclassified, 2-Ground, 7-Noise, 9-Water,
12-Overlap. Once the data was received by NOAA CSC, all of the class 7 (noise) points
were removed from the data set. Dewberry produced classified LAS and DEMs for the
99 tiles (1700 m x 1700 m) that cover the project area.